munton



(No Model.) J. MUNTON.

GAR WHEEL. I v No. 319,837. Patented June 9, 1885.

min asses:

In we ntor:

' iINirEo STATES ram 1 .IAMES MUNTON, or CHICAGO, ILLINOIS, ASSIGNOR TQTHE MUNTON GAR WHEEL COMPANY, OF SAMEPLAGE; J

CAR=WHVEELP SPECIFICATION forming part of Letters Patent No. 319,837, dated June 9,1835.

Application filed November 24, 1884. (N niodeli) To all tvhom it may concern:

Be it known that 1, JAMES MUNTON, a sub ject of the Queen ofGreat Britain, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Gar-XVheels and Manufacture of the Same, of which the following is a specification.

The present invention relates to car-wheels having steel tires.

The usual life or wear of a steel-tire carwheel is ordinarily about four or five times that of the cast-iron wheel, but the principal objection or difficulty in their use heretofore has been, first, the liabilty of the wheel to utterly collapse if the tire happens to break, so that it can be nolonger run,even forashort distance, and also, of course, endangering the car or the wrecking of a whole train perhaps in case of such accident; and, second, their expensiveness. By my invention'I overcome both of these objections.

In the accompanying drawings, which form a part of this specification, and in which similar letters of reference indicate like parts,

Figure 1 is a sectional view of a Wheel embodying my invention, showing the lower half of the same in elevation. Fig. 2 is a section of the wheel showing the tire fitted upon the center before it is secured thereon. Fig. 3 shows a section of the tire as it is rolled and before being finished by turning or cutting the grooves therein. Fig. 4 is a plan view of the tire, and Fig. 5 is a plan view of the center.

5 In said drawings, A represents the center of the wheel, consisting of an old cast-iron carwheel having its tread turned down square, as shown at a, to fit the interior of the tire, and

0 provided with an annular projecting rim, a, at one side and a radially-projecting rim or web, a on its periphery at the opposite side or edge of the wheel. N otches or recesses a preferably six or eight or more in number, 5 and about two or three inches in length, are

provided at intervals in this radially-projecting rim or web a. These recesses should have square or rectangular ends, as shown in Figs. 2 and 5. An annular groove, to, is also cutin the opposite side of this rim or web a, so as to form a horizontally-projecting annular rim, a at the outerle'dgev of the rim a Instead of making thecenter A out of an old worn=out wheel it may of course be specially cas'tin the desired form, asshown. 5

The steel tire B is rolled in the form shown in Fig. 3.that isto say, with a rim or web,

1), projecting inwardly on its outer edge, and with an annular recess, 12, corresponding in. depth 'with the rim or web a on the-center A. The tire is also rolled with a projecting annular web or rim, b on its inner side, the inner surface of which web I) is provided with an annular curved groove or recess, b After the tire is thus rolled, an annular groove, 1), corresponding to the rim a on the center, is next cut in the inner faceof the rim or web I), and another annular groove, b is cut in the vertical face of the recess b, to fit the projecting rim a on the center, and thus also forming a projecting rim, b, that fits in the groove a. on the center. The tire is next forced or shrunk upon the center, and then the web b is cut, as shown at b I), thus forming the lips b which are then hammered down into the corresponding recesses a on the center, thus firmly securing the tire on the center. -By reason of the lips I; fitting in the recesses. a the tire will also be securely held from rotation on the center when brakes are applied, and thus prevented from getting loose. As different portions of the tire are separately secured to the center by means of the lips I) b at different points and the interlocking grooves and rims on the tire and center, it is obvious that if the 8 5 tire happens to break, even into a number of different pieces, they will still be secured to the center and still constitutea wheel that can be run a reasonable distance, and for the same reason no danger to the car or train will be occasioned by the breaking of the tire, as the wheel cannot collapse. As onlya portion of the projecting web I) is used to form the lips b whendesired the tire can be removed from the center by simply cutting off these lips, and then again replaced on the same or a different center by merely turning the'tire into a slightly different position on the center and then forming new lips I) out of otherpor tions of the said web or rim b IOO beso accurately fittedas to causetheold bolt-i holes and fastening devices to con ejn the; right place and register with each other.

The annular groove b in the projecting web H b serves to render said web, or portions ofit, more easily turned down into the recesses afi and to prevent the lips b breaking ofi' in the operation. H Thelipsb should be heated when they are hammered down. M m; .2. i

I wish it to be understood that I do not herein claim, broadly, a car-wheel consisting of a center having a recessed edge or rimtn on the center and tire, as herein described, andi set forth in, the claims; and for the same reason I do not herein claim the web b, provided with a groove, b, on the under side near its base, to facilitate its turning down in connection with the center havingarecessed edge -jor-rin asthat also forms part of said other 'pendingkaipplication.

I claim- The combination of center A, provided with projecting rims a and a, annular groove 9 and recesses a, with tire B, having annular grooves b and b and rirn bf, interlocking with said rims and grooves on said center, and prowinded-with lips b", fitting in said recesses a, substantially as described.

2. The combination ofcast-iron center A with,s es t ir tfiasa dl e t r, an e bei 7 v d t combination v the r h in -li P 91 pro w hlinte l cknsann lanrims an of a p jec ve eb tur e down int we; ism a l: c ter; a ii j @15 9 e e e cessed edge or m t 'prejve t e iresl l if and anew-hay n tn iecti gv r 0n the ee t as ata m st w bimt of other ap l c fi d b D1 ?,QI1:113 th d of J anuary, 1885 and now pending ,injgheg Patent 1 6,; bubI. herein, z a m uch rec sse edge 0 Tim an ti n d-fiown g rsqnl ieefis-i ncction with the interlocking rims and grooves p911: .pnsl tw-hie mre tu pefl dri e into Said recesses a, substantiallyas specified t JAMES MUNTON.

Witnesses;

EDM ND ADoooK', H. M. MUNDAY. 

